Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb3e7fdb0e2e57c…

MALICIOUS

PDF

50.5 KB Created: 2020-04-02 13:43:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a87ec5d3ce63942575dd177c8dc335e8 SHA-1: 98b0a44d5b077c1812a12de09eba35e36bf8c34d SHA-256: edb3e7fdb0e2e57c354ab1d2cc311811ee140b3234073a1da3b4efe8c71a4603
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

This PDF file exhibits characteristics of a link farm, as indicated by the 'PDF_SEO_LINK_FARM' heuristic firing. It contains numerous external links, including http://blogetha.com/uploads/1/3/0/4/130488621/130488621.html#perianal+pain+icd+10 and http://paulsgospel.org/uploads/1/3/0/7/130738632/lizageweworewuzufuz.pdf, which are likely used to manipulate search engine results or redirect users to malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://blogetha.com/uploads/1/3/0/4/130488621/130488621.html#perianal+pain+icd+10
    • http://paulsgospel.org/uploads/1/3/0/7/130738632/lizageweworewuzufuz.pdf
    • http://holotropicbreathworkmontana.com/uploads/1/3/0/6/130604232/1293551.pdf
    • http://christinekeith.org/uploads/1/3/0/8/130814056/virirokugowop.pdf
    • http://louisemasonmetalartist.com/uploads/1/3/0/8/130873917/niwonenugoda-vozexutov.pdf
    • http://herkimerboces.net/uploads/1/3/0/5/130542937/17ca891e9.pdf
    • http://patrizia-camardella.com/uploads/1/3/0/7/130775921/2430518.pdf
    • http://digitalbizzness.com/uploads/1/3/0/6/130605506/bowuxizukisow.pdf
    • http://chellysboutique.com/uploads/1/3/0/6/130621219/famagosusa.pdf
    • http://www.cb15.org/uploads/1/3/0/8/130814241/3830350.pdf
    • http://speechbeginningstherapy.com/uploads/1/3/0/4/130435520/8725590.pdf
    • http://lumpywear.com/uploads/1/3/0/6/130640126/2608600.pdf
    • http://tunecitydjs.com/uploads/1/3/1/3/131379231/2fe62a7dd45.pdf
    • http://ballparkrankings.com/uploads/1/3/0/7/130775657/mizedalixowekuwog.pdf
    • http://jerrylinovo.com/uploads/1/3/0/4/130483587/fubajanozajixol.pdf
    • http://daniell-law.com/uploads/1/3/0/9/130969775/3216760.pdf
    • http://velocitabikeapparel.com/uploads/1/3/0/7/130775016/mevoxojopezam-moniviwejoka-vutozezuzelem-derubuz.pdf
    • http://dollarstopparty.com/uploads/1/3/0/6/130622058/5146529.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008504.bin
a0eb66745b4f7f174ddbc31387e325672973e259173bec9b35fc173ae8ec8c8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8504 8332 bytes
font_01_sfnt_off0000a50e.bin
6593bfd923417876c97f2afb963e7bb3bf63b7191d0b722c0a9c1d8713d17175		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA50E 16320 bytes

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